karma-sprockets-mincer

Serve assets developed for Sprockets with Mincer

Installation

Add karma-sprockets-mincer as a devDependency in your package.json.

{
  "devDependencies": {
    "karma": "",
    "karma-sprockets-mincer": ""
  }
}

or

npm install karma-sprockets-mincer --save-dev

Configuration

Add the plugin to your config file.

  plugins: [
    'karma-phantomjs-launcher'
    [...]
    'karma-sprockets-mincer'
  ]

Then add sprockets-mincer to the top of the frameworks list (order is important).

frameworks: [
  "sprockets-mincer"
  "jasmine"
]

Next, configure the paths that the Sprockets (Mincer) environment should know about.

sprocketsPaths: [
  'app/assets/javascripts'
  'lib/assets/javascripts'
  'vendor/assets/javascripts'
]

Then, configure the js bundle files that Sprockets should generate. These files will be regenerated whenever a sprockets environment file changes.

sprocketsBundles: [
  'application.coffee'
]

Be sure to also add files listed in sprocketsBundles to config.files in the correct place. sprockets-mincer will replace the pattern in config.files with the one that is compiled.

files: [
  ...
  'application.coffee' # this pattern will be replaced automatically
  ...
]

Helpers

You can add helpers that the assets might be using:

sprocketsHelpers:
  asset_path: (fileName) -> return "assets/#{fileName}"

RubyGems

If you are using this in a Ruby/Rails project, you can add the rubygem paths as well:

# "gem-name": ["array of", "sprockets paths"] 
rubygems: {
  "rails-widget": ["lib/assets/javascripts", "vendor/assets/javascripts"]
  "jquery-rails": ["vendor/assets/javascripts"]
}

This will run grab the path of the bundled gem by running bundle info --path and add them with the specified paths to Sprockets/Mincer.

Additional Mincer engines

The path to engine file can be both absolute or relative to basePath.

# "extension": "path-to-engine-definition-file.js" 
mincerEngines: {
  ".hbs": "./lib/handlebarsjst.js",
  ".xxx": "/opt/mincer-ext/engine.js"
}